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setup.py
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# Copyright 2019 Uber Technologies, Inc. All Rights Reserved.
# Modifications copyright Microsoft
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
import os
import re
import shlex
import subprocess
import sys
import textwrap
import traceback
import pipes
import warnings
from copy import deepcopy
from distutils.errors import CompileError, DistutilsError, \
DistutilsPlatformError, LinkError
from distutils.sysconfig import customize_compiler
from distutils.version import LooseVersion
from setuptools import setup, Extension, find_packages
from setuptools.command.build_ext import build_ext
from horovod import __version__
from horovod.common.util import env
class CMakeExtension(Extension):
def __init__(self, name, cmake_lists_dir='.', sources=[], **kwa):
Extension.__init__(self, name, sources=sources, **kwa)
self.cmake_lists_dir = os.path.abspath(cmake_lists_dir)
tensorflow_mpi_lib = Extension('horovod.tensorflow.mpi_lib', [])
torch_mpi_lib = Extension('horovod.torch.mpi_lib', [])
torch_mpi_lib_impl = Extension('horovod.torch.mpi_lib_impl', [])
torch_mpi_lib_v2 = Extension('horovod.torch.mpi_lib_v2', [])
mxnet_mpi_lib = Extension('horovod.mxnet.mpi_lib', [])
gloo_lib = CMakeExtension('gloo', cmake_lists_dir='third_party/gloo',
sources=[])
ccl_root = os.environ.get('CCL_ROOT')
have_ccl = ccl_root is not None
def is_build_action():
if len(sys.argv) <= 1:
return False
if sys.argv[1].startswith('build'):
return True
if sys.argv[1].startswith('bdist'):
return True
if sys.argv[1].startswith('install'):
return True
def check_tf_version():
try:
import tensorflow as tf
if LooseVersion(tf.__version__) < LooseVersion('1.1.0'):
raise DistutilsPlatformError(
'Your TensorFlow version %s is outdated. '
'Horovod requires tensorflow>=1.1.0' % tf.__version__)
except ImportError:
raise DistutilsPlatformError(
'import tensorflow failed, is it installed?\n\n%s' % traceback.format_exc())
except AttributeError:
# This means that tf.__version__ was not exposed, which makes it *REALLY* old.
raise DistutilsPlatformError(
'Your TensorFlow version is outdated. Horovod requires tensorflow>=1.1.0')
def check_mx_version():
try:
import mxnet as mx
if mx.__version__ < '1.4.0':
raise DistutilsPlatformError(
'Your MXNet version %s is outdated. '
'Horovod requires mxnet>=1.4.0' % mx.__version__)
except ImportError:
raise DistutilsPlatformError(
'import mxnet failed, is it installed?\n\n%s' % traceback.format_exc())
except AttributeError:
raise DistutilsPlatformError(
'Your MXNet version is outdated. Horovod requires mxnet>1.3.0')
def get_supported_instruction_set_flags(flags_to_check):
supported = []
try:
flags_output = subprocess.check_output(
'gcc -march=native -E -v - </dev/null 2>&1 | grep cc1',
shell=True, universal_newlines=True).strip()
flags = shlex.split(flags_output)
supported = [x for x in flags_to_check if x in flags or x.replace('-m', '+') in flags]
except subprocess.CalledProcessError:
# Fallback to no advanced instruction set flags if were not able to get flag information.
pass
return supported
def get_cpp_flags(build_ext):
last_err = None
default_flags = ['-std=c++11', '-fPIC', '-O3', '-Wall', '-fassociative-math', '-ffast-math', '-ftree-vectorize', '-funsafe-math-optimizations']
build_arch_flags_env = os.environ.get('HOROVOD_BUILD_ARCH_FLAGS')
build_arch_flags = get_supported_instruction_set_flags(['-mf16c', '-mavx', '-mfma']) if build_arch_flags_env is None else build_arch_flags_env.split()
if sys.platform == 'darwin':
# Darwin most likely will have Clang, which has libc++.
flags_to_try = [default_flags + ['-stdlib=libc++'] + build_arch_flags,
default_flags + build_arch_flags,
default_flags + ['-stdlib=libc++'],
default_flags]
else:
flags_to_try = [default_flags + build_arch_flags,
default_flags + ['-stdlib=libc++'] + build_arch_flags,
default_flags,
default_flags + ['-stdlib=libc++']]
for cpp_flags in flags_to_try:
try:
test_compile(build_ext, 'test_cpp_flags',
extra_compile_preargs=cpp_flags,
code=textwrap.dedent('''\
#include <unordered_map>
void test() {
}
'''))
return cpp_flags
except (CompileError, LinkError):
last_err = 'Unable to determine C++ compilation flags (see error above).'
except Exception:
last_err = 'Unable to determine C++ compilation flags. ' \
'Last error:\n\n%s' % traceback.format_exc()
raise DistutilsPlatformError(last_err)
def get_link_flags(build_ext):
last_err = None
libtool_flags = ['-Wl,-exported_symbols_list,horovod.exp']
ld_flags = ['-Wl,--version-script=horovod.lds']
if sys.platform == 'darwin':
flags_to_try = [libtool_flags, ld_flags]
else:
flags_to_try = [ld_flags, libtool_flags]
for link_flags in flags_to_try:
try:
test_compile(build_ext, 'test_link_flags',
extra_link_preargs=link_flags,
code=textwrap.dedent('''\
void test() {
}
'''))
return link_flags
except (CompileError, LinkError):
last_err = 'Unable to determine C++ link flags (see error above).'
except Exception:
last_err = 'Unable to determine C++ link flags. ' \
'Last error:\n\n%s' % traceback.format_exc()
raise DistutilsPlatformError(last_err)
def get_tf_include_dirs():
import tensorflow as tf
tf_inc = tf.sysconfig.get_include()
return [tf_inc, '%s/external/nsync/public' % tf_inc]
def get_tf_lib_dirs():
import tensorflow as tf
tf_lib = tf.sysconfig.get_lib()
return [tf_lib]
def get_tf_libs(build_ext, lib_dirs, cpp_flags):
last_err = None
for tf_libs in [['tensorflow_framework'], []]:
try:
lib_file = test_compile(build_ext, 'test_tensorflow_libs',
library_dirs=lib_dirs, libraries=tf_libs,
extra_compile_preargs=cpp_flags,
code=textwrap.dedent('''\
void test() {
}
'''))
from tensorflow.python.framework import load_library
load_library.load_op_library(lib_file)
return tf_libs
except (CompileError, LinkError):
last_err = 'Unable to determine -l link flags to use with TensorFlow (see error above).'
except Exception:
last_err = 'Unable to determine -l link flags to use with TensorFlow. ' \
'Last error:\n\n%s' % traceback.format_exc()
raise DistutilsPlatformError(last_err)
def get_tf_abi(build_ext, include_dirs, lib_dirs, libs, cpp_flags):
last_err = None
cxx11_abi_macro = '_GLIBCXX_USE_CXX11_ABI'
for cxx11_abi in ['0', '1']:
try:
lib_file = test_compile(build_ext, 'test_tensorflow_abi',
macros=[(cxx11_abi_macro, cxx11_abi)],
include_dirs=include_dirs,
library_dirs=lib_dirs,
libraries=libs,
extra_compile_preargs=cpp_flags,
code=textwrap.dedent('''\
#include <string>
#include "tensorflow/core/framework/op.h"
#include "tensorflow/core/framework/op_kernel.h"
#include "tensorflow/core/framework/shape_inference.h"
void test() {
auto ignore = tensorflow::strings::StrCat("a", "b");
}
'''))
from tensorflow.python.framework import load_library
load_library.load_op_library(lib_file)
return cxx11_abi_macro, cxx11_abi
except (CompileError, LinkError):
last_err = 'Unable to determine CXX11 ABI to use with TensorFlow (see error above).'
except Exception:
last_err = 'Unable to determine CXX11 ABI to use with TensorFlow. ' \
'Last error:\n\n%s' % traceback.format_exc()
raise DistutilsPlatformError(last_err)
def get_tf_flags(build_ext, cpp_flags):
import tensorflow as tf
try:
return tf.sysconfig.get_compile_flags(), tf.sysconfig.get_link_flags()
except AttributeError:
# fallback to the previous logic
tf_include_dirs = get_tf_include_dirs()
tf_lib_dirs = get_tf_lib_dirs()
tf_libs = get_tf_libs(build_ext, tf_lib_dirs, cpp_flags)
tf_abi = get_tf_abi(build_ext, tf_include_dirs,
tf_lib_dirs, tf_libs, cpp_flags)
compile_flags = []
for include_dir in tf_include_dirs:
compile_flags.append('-I%s' % include_dir)
if tf_abi:
compile_flags.append('-D%s=%s' % tf_abi)
link_flags = []
for lib_dir in tf_lib_dirs:
link_flags.append('-L%s' % lib_dir)
for lib in tf_libs:
link_flags.append('-l%s' % lib)
return compile_flags, link_flags
def get_mx_include_dirs():
import mxnet as mx
return [mx.libinfo.find_include_path()]
def get_mx_lib_dirs():
import mxnet as mx
mx_libs = mx.libinfo.find_lib_path()
mx_lib_dirs = [os.path.dirname(mx_lib) for mx_lib in mx_libs]
return mx_lib_dirs
def get_mx_libs(build_ext, lib_dirs, cpp_flags):
last_err = None
for mx_libs in [['mxnet'], []]:
try:
lib_file = test_compile(build_ext, 'test_mx_libs',
library_dirs=lib_dirs, libraries=mx_libs,
extra_compile_preargs=cpp_flags,
code=textwrap.dedent('''\
void test() {
}
'''))
return mx_libs
except (CompileError, LinkError):
last_err = 'Unable to determine -l link flags to use with MXNet (see error above).'
except Exception:
last_err = 'Unable to determine -l link flags to use with MXNet. ' \
'Last error:\n\n%s' % traceback.format_exc()
raise DistutilsPlatformError(last_err)
def get_mx_flags(build_ext, cpp_flags):
mx_include_dirs = get_mx_include_dirs()
mx_lib_dirs = get_mx_lib_dirs()
mx_libs = get_mx_libs(build_ext, mx_lib_dirs, cpp_flags)
compile_flags = []
has_mkldnn = is_mx_mkldnn()
for include_dir in mx_include_dirs:
compile_flags.append('-I%s' % include_dir)
if has_mkldnn:
mkldnn_include = os.path.join(include_dir, 'mkldnn')
compile_flags.append('-I%s' % mkldnn_include)
link_flags = []
for lib_dir in mx_lib_dirs:
link_flags.append('-Wl,-rpath,%s' % lib_dir)
link_flags.append('-L%s' % lib_dir)
for lib in mx_libs:
link_flags.append('-l%s' % lib)
return compile_flags, link_flags
def get_mpi_flags():
show_command = os.environ.get('HOROVOD_MPICXX_SHOW', 'mpicxx -show')
try:
mpi_show_output = subprocess.check_output(
shlex.split(show_command), universal_newlines=True).strip()
mpi_show_args = shlex.split(mpi_show_output)
if not mpi_show_args[0].startswith('-'):
# Open MPI and MPICH print compiler name as a first word, skip it
mpi_show_args = mpi_show_args[1:]
# strip off compiler call portion and always escape each arg
return ' '.join(['"' + arg.replace('"', '"\'"\'"') + '"'
for arg in mpi_show_args])
except Exception:
raise DistutilsPlatformError(
'%s failed (see error below), is MPI in $PATH?\n'
'Note: If your version of MPI has a custom command to show compilation flags, '
'please specify it with the HOROVOD_MPICXX_SHOW environment variable.\n\n'
'%s' % (show_command, traceback.format_exc()))
def test_compile(build_ext, name, code, libraries=None, include_dirs=None,
library_dirs=None,
macros=None, extra_compile_preargs=None,
extra_link_preargs=None):
test_compile_dir = os.path.join(build_ext.build_temp, 'test_compile')
if not os.path.exists(test_compile_dir):
os.makedirs(test_compile_dir)
source_file = os.path.join(test_compile_dir, '%s.cc' % name)
with open(source_file, 'w') as f:
f.write(code)
compiler = build_ext.compiler
[object_file] = compiler.object_filenames([source_file])
shared_object_file = compiler.shared_object_filename(
name, output_dir=test_compile_dir)
compiler.compile([source_file], extra_preargs=extra_compile_preargs,
include_dirs=include_dirs, macros=macros)
compiler.link_shared_object(
[object_file], shared_object_file, libraries=libraries,
library_dirs=library_dirs,
extra_preargs=extra_link_preargs)
return shared_object_file
def get_cuda_dirs(build_ext, cpp_flags):
cuda_include_dirs = []
cuda_lib_dirs = []
cuda_home = os.environ.get('HOROVOD_CUDA_HOME')
if cuda_home:
cuda_include_dirs += ['%s/include' % cuda_home]
cuda_lib_dirs += ['%s/lib' % cuda_home, '%s/lib64' % cuda_home]
cuda_include = os.environ.get('HOROVOD_CUDA_INCLUDE')
if cuda_include:
cuda_include_dirs += [cuda_include]
cuda_lib = os.environ.get('HOROVOD_CUDA_LIB')
if cuda_lib:
cuda_lib_dirs += [cuda_lib]
if not cuda_include_dirs and not cuda_lib_dirs:
# default to /usr/local/cuda
cuda_include_dirs += ['/usr/local/cuda/include']
cuda_lib_dirs += ['/usr/local/cuda/lib', '/usr/local/cuda/lib64']
try:
test_compile(build_ext, 'test_cuda', libraries=['cudart'],
include_dirs=cuda_include_dirs,
library_dirs=cuda_lib_dirs,
extra_compile_preargs=cpp_flags,
code=textwrap.dedent('''\
#include <cuda_runtime.h>
void test() {
cudaSetDevice(0);
}
'''))
except (CompileError, LinkError):
raise DistutilsPlatformError(
'CUDA library was not found (see error above).\n'
'Please specify correct CUDA location with the HOROVOD_CUDA_HOME '
'environment variable or combination of HOROVOD_CUDA_INCLUDE and '
'HOROVOD_CUDA_LIB environment variables.\n\n'
'HOROVOD_CUDA_HOME - path where CUDA include and lib directories can be found\n'
'HOROVOD_CUDA_INCLUDE - path to CUDA include directory\n'
'HOROVOD_CUDA_LIB - path to CUDA lib directory')
return cuda_include_dirs, cuda_lib_dirs
def get_rocm_dirs(build_ext, cpp_flags):
rocm_include_dirs = []
rocm_lib_dirs = []
rocm_libs = ['hip_hcc']
rocm_macros = [('__HIP_PLATFORM_HCC__',1)]
rocm_path = os.environ.get('HOROVOD_ROCM_HOME', '/opt/rocm')
rocm_include_dirs += [
'%s/include' % rocm_path,
'%s/hcc/include' % rocm_path,
'%s/hip/include' % rocm_path,
'%s/hsa/include' % rocm_path,
]
rocm_lib_dirs += [
'%s/lib' % rocm_path,
]
try:
test_compile(build_ext, 'test_hip', libraries=rocm_libs, include_dirs=rocm_include_dirs,
library_dirs=rocm_lib_dirs, extra_compile_preargs=cpp_flags, macros=rocm_macros,
code=textwrap.dedent('''\
#include <hip/hip_runtime.h>
void test() {
hipSetDevice(0);
}
'''))
except (CompileError, LinkError):
raise DistutilsPlatformError(
'HIP library and/or ROCm header files not found (see error above).\n'
'Please specify correct ROCm location with the HOROVOD_ROCM_HOME environment variable')
return rocm_include_dirs, rocm_lib_dirs, rocm_macros
def get_nccl_vals(build_ext, gpu_include_dirs, gpu_lib_dirs, gpu_macros, cpp_flags, have_rocm):
nccl_include_dirs = []
nccl_lib_dirs = []
nccl_libs = []
nccl_home = os.environ.get('HOROVOD_NCCL_HOME')
if nccl_home:
nccl_include_dirs += ['%s/include' % nccl_home]
nccl_lib_dirs += ['%s/lib' % nccl_home, '%s/lib64' % nccl_home]
nccl_include_dir = os.environ.get('HOROVOD_NCCL_INCLUDE')
if nccl_include_dir:
nccl_include_dirs += [nccl_include_dir]
nccl_lib_dir = os.environ.get('HOROVOD_NCCL_LIB')
if nccl_lib_dir:
nccl_lib_dirs += [nccl_lib_dir]
nccl_link_mode = os.environ.get('HOROVOD_NCCL_LINK', 'SHARED' if have_rocm else 'STATIC')
if nccl_link_mode.upper() == 'SHARED':
if have_rocm:
nccl_libs += ['rccl']
else:
nccl_libs += ['nccl']
else:
nccl_libs += ['nccl_static']
if have_rocm:
raise DistutilsPlatformError('RCCL must be a shared library')
try:
test_compile(build_ext, 'test_nccl', libraries=nccl_libs,
include_dirs=nccl_include_dirs + gpu_include_dirs,
library_dirs=nccl_lib_dirs + gpu_lib_dirs,
extra_compile_preargs=cpp_flags,
macros=gpu_macros,
code=textwrap.dedent('''\
#include <%s>
#if NCCL_MAJOR < 2
#error Horovod requires NCCL 2.0 or later version, please upgrade.
#endif
void test() {
ncclUniqueId nccl_id;
ncclGetUniqueId(&nccl_id);
}
'''%('rccl.h' if have_rocm else 'nccl.h')))
except (CompileError, LinkError):
raise DistutilsPlatformError(
'NCCL 2.0 library or its later version was not found (see error above).\n'
'Please specify correct NCCL location with the HOROVOD_NCCL_HOME '
'environment variable or combination of HOROVOD_NCCL_INCLUDE and '
'HOROVOD_NCCL_LIB environment variables.\n\n'
'HOROVOD_NCCL_HOME - path where NCCL include and lib directories can be found\n'
'HOROVOD_NCCL_INCLUDE - path to NCCL include directory\n'
'HOROVOD_NCCL_LIB - path to NCCL lib directory')
return nccl_include_dirs, nccl_lib_dirs, nccl_libs
def get_ddl_dirs(build_ext, cuda_include_dirs, cuda_lib_dirs, cpp_flags):
ddl_include_dirs = []
ddl_lib_dirs = []
ddl_home = os.environ.get('HOROVOD_DDL_HOME')
if ddl_home:
ddl_include_dirs += ['%s/include' % ddl_home]
ddl_lib_dirs += ['%s/lib' % ddl_home, '%s/lib64' % ddl_home]
ddl_include_dir = os.environ.get('HOROVOD_DDL_INCLUDE')
if ddl_include_dir:
ddl_include_dirs += [ddl_include_dir]
ddl_lib_dir = os.environ.get('HOROVOD_DDL_LIB')
if ddl_lib_dir:
ddl_lib_dirs += [ddl_lib_dir]
# Keep DDL legacy folders for backward compatibility
if not ddl_include_dirs:
ddl_include_dirs += ['/opt/DL/ddl/include']
if not ddl_lib_dirs:
ddl_lib_dirs += ['/opt/DL/ddl/lib']
try:
test_compile(build_ext, 'test_ddl', libraries=['ddl', 'ddl_pack'],
include_dirs=ddl_include_dirs + cuda_include_dirs,
library_dirs=ddl_lib_dirs + cuda_lib_dirs,
extra_compile_preargs=cpp_flags,
code=textwrap.dedent('''\
#include <ddl.hpp>
void test() {
}
'''))
except (CompileError, LinkError):
raise DistutilsPlatformError(
'IBM PowerAI DDL library was not found (see error above).\n'
'Please specify correct DDL location with the HOROVOD_DDL_HOME '
'environment variable or combination of HOROVOD_DDL_INCLUDE and '
'HOROVOD_DDL_LIB environment variables.\n\n'
'HOROVOD_DDL_HOME - path where DDL include and lib directories can be found\n'
'HOROVOD_DDL_INCLUDE - path to DDL include directory\n'
'HOROVOD_DDL_LIB - path to DDL lib directory')
return ddl_include_dirs, ddl_lib_dirs
def set_cuda_options(build_ext, COMPILE_FLAGS, MACROS, INCLUDES, SOURCES, BUILD_MPI, LIBRARY_DIRS, LIBRARIES, **kwargs):
cuda_include_dirs, cuda_lib_dirs = get_cuda_dirs(build_ext, COMPILE_FLAGS)
MACROS += [('HAVE_CUDA', '1'), ('HAVE_GPU', '1')]
INCLUDES += cuda_include_dirs
SOURCES += ['horovod/common/ops/cuda_operations.cc',
'horovod/common/ops/gpu_operations.cc']
if BUILD_MPI:
SOURCES += ['horovod/common/ops/mpi_gpu_operations.cc']
LIBRARY_DIRS += cuda_lib_dirs
LIBRARIES += ['cudart']
def get_common_options(build_ext):
cpp_flags = get_cpp_flags(build_ext)
link_flags = get_link_flags(build_ext)
is_mac = sys.platform == 'darwin'
compile_without_gloo = os.environ.get('HOROVOD_WITHOUT_GLOO')
if compile_without_gloo:
print('INFO: HOROVOD_WITHOUT_GLOO detected, skip compiling Horovod with Gloo.')
have_gloo = False
have_cmake = False
else:
# determining if system has cmake installed
compile_with_gloo = os.environ.get('HOROVOD_WITH_GLOO')
try:
cmake_bin = get_cmake_bin()
subprocess.check_output([cmake_bin, '--version'])
have_cmake = True
except Exception:
if compile_with_gloo:
# Require Gloo to succeed, otherwise fail the install.
raise RuntimeError('Cannot find CMake. CMake is required to build Horovod with Gloo.')
print('INFO: Cannot find CMake, will skip compiling Horovod with Gloo.')
have_cmake = False
# TODO: remove system check if gloo support MacOX in the future
# https://github.com/facebookincubator/gloo/issues/182
if is_mac:
if compile_with_gloo:
raise RuntimeError('Gloo cannot be compiled on MacOS. Unset HOROVOD_WITH_GLOO to use MPI.')
print('INFO: Gloo cannot be compiled on MacOS, will skip compiling Horovod with Gloo.')
have_gloo = not is_mac and have_cmake
compile_without_mpi = os.environ.get('HOROVOD_WITHOUT_MPI')
mpi_flags = ''
if compile_without_mpi:
print('INFO: HOROVOD_WITHOUT_MPI detected, skip compiling Horovod with MPI.')
have_mpi = False
else:
# If without_mpi flag is not set by user, try to get mpi flags
try:
mpi_flags = get_mpi_flags()
have_mpi = True
except Exception:
if os.environ.get('HOROVOD_WITH_MPI'):
# Require MPI to succeed, otherwise fail the install.
raise
# If exceptions happen, will not use mpi during compilation.
print(traceback.format_exc(), file=sys.stderr)
print('INFO: Cannot find MPI compilation flags, will skip compiling with MPI.')
have_mpi = False
if not have_gloo and not have_mpi:
raise RuntimeError('One of Gloo or MPI are required for Horovod to run. Check the logs above for more info.')
gpu_operations = os.environ.get('HOROVOD_GPU_OPERATIONS')
if gpu_operations and gpu_operations not in {'NCCL', 'MPI'}:
raise DistutilsError(f'HOROVOD_GPU_OPERATIONS={gpu_operations} is invalid, '
f'supported values are: NCCL, MPI.')
def get_gpu_op_variable(op_variable_name, options):
gpu_operation = os.environ.get(op_variable_name)
if gpu_operations:
if gpu_operation:
raise DistutilsError(f'Cannot specify both HOROVOD_GPU_OPERATIONS and {op_variable_name} options. '
'Try unsetting one of these variables and reinstalling.')
return gpu_operations
if gpu_operation and gpu_operation not in options:
options_str = ', '.join(options)
raise DistutilsError(f'{op_variable_name}={gpu_operation} is invalid, '
f'supported values are: {options_str}.')
return gpu_operation
gpu_allreduce = get_gpu_op_variable('HOROVOD_GPU_ALLREDUCE', ['NCCL', 'MPI', 'DDL'])
gpu_allgather = get_gpu_op_variable('HOROVOD_GPU_ALLGATHER', ['NCCL', 'MPI'])
gpu_broadcast = get_gpu_op_variable('HOROVOD_GPU_BROADCAST', ['NCCL', 'MPI'])
have_cuda = False
have_rocm = False
gpu_include_dirs = gpu_lib_dirs = gpu_macros = []
if gpu_allreduce or gpu_allgather or gpu_broadcast:
gpu_type = os.environ.get('HOROVOD_GPU', 'CUDA')
if gpu_type == 'CUDA':
have_cuda = True
gpu_include_dirs, gpu_lib_dirs = get_cuda_dirs(build_ext, cpp_flags)
elif gpu_type == 'ROCM':
have_rocm = True
gpu_include_dirs, gpu_lib_dirs, gpu_macros = get_rocm_dirs(build_ext, cpp_flags)
else:
raise DistutilsError("Unknown HOROVOD_GPU type '%s'" % gpu_type)
if gpu_allreduce == 'NCCL' or gpu_allgather == 'NCCL' or gpu_broadcast == 'NCCL':
have_nccl = True
nccl_include_dirs, nccl_lib_dirs, nccl_libs = get_nccl_vals(
build_ext, gpu_include_dirs, gpu_lib_dirs, gpu_macros, cpp_flags, have_rocm)
else:
have_nccl = False
nccl_include_dirs = nccl_lib_dirs = nccl_libs = []
if gpu_allreduce == 'DDL':
warnings.warn('DDL backend has been deprecated. Please, start using the NCCL backend '
'by building Horovod with "HOROVOD_GPU_OPERATIONS=NCCL". '
'Will be removed in v0.21.0.',
DeprecationWarning)
have_ddl = True
ddl_include_dirs, ddl_lib_dirs = get_ddl_dirs(build_ext,
gpu_include_dirs,
gpu_lib_dirs, cpp_flags)
else:
have_ddl = False
ddl_include_dirs = ddl_lib_dirs = []
if gpu_allreduce == 'NCCL' \
and (gpu_allgather == 'MPI' or gpu_broadcast == 'MPI') \
and not os.environ.get('HOROVOD_ALLOW_MIXED_GPU_IMPL'):
raise DistutilsError(
'You should not mix NCCL and MPI GPU due to a possible deadlock.\n'
'If you\'re sure you want to mix them, set the '
'HOROVOD_ALLOW_MIXED_GPU_IMPL environment variable to \'1\'.')
MACROS = [('EIGEN_MPL2_ONLY', 1)]
INCLUDES = ['third_party/HTTPRequest/include',
'third_party/boost/assert/include',
'third_party/boost/config/include',
'third_party/boost/core/include',
'third_party/boost/detail/include',
'third_party/boost/iterator/include',
'third_party/boost/lockfree/include',
'third_party/boost/mpl/include',
'third_party/boost/parameter/include',
'third_party/boost/predef/include',
'third_party/boost/preprocessor/include',
'third_party/boost/static_assert/include',
'third_party/boost/type_traits/include',
'third_party/boost/utility/include',
'third_party/eigen',
'third_party/flatbuffers/include',
'third_party/lbfgs/include']
SOURCES = ['horovod/common/common.cc',
'horovod/common/controller.cc',
'horovod/common/fusion_buffer_manager.cc',
'horovod/common/logging.cc',
'horovod/common/message.cc',
'horovod/common/operations.cc',
'horovod/common/parameter_manager.cc',
'horovod/common/response_cache.cc',
'horovod/common/stall_inspector.cc',
'horovod/common/thread_pool.cc',
'horovod/common/timeline.cc',
'horovod/common/tensor_queue.cc',
'horovod/common/ops/collective_operations.cc',
'horovod/common/ops/operation_manager.cc',
'horovod/common/optim/bayesian_optimization.cc',
'horovod/common/optim/gaussian_process.cc',
'horovod/common/utils/env_parser.cc'
]
COMPILE_FLAGS = cpp_flags + shlex.split(mpi_flags)
LINK_FLAGS = link_flags + shlex.split(mpi_flags)
LIBRARY_DIRS = []
LIBRARIES = []
cpu_operation = os.environ.get('HOROVOD_CPU_OPERATIONS')
if cpu_operation:
print('INFO: Set default CPU operation to ' + cpu_operation)
if cpu_operation.upper() == 'MPI':
if not have_mpi:
raise RuntimeError('MPI is not installed, try changing HOROVOD_CPU_OPERATIONS.')
MACROS += [('HOROVOD_CPU_OPERATIONS_DEFAULT', "'M'")]
elif cpu_operation.upper() == 'MLSL':
raise RuntimeError('Intel(R) MLSL was removed. Upgrade to oneCCL and set HOROVOD_CPU_OPERATIONS=CCL.')
elif cpu_operation.upper() == 'CCL':
if not have_ccl:
raise RuntimeError('oneCCL is not installed, try changing HOROVOD_CPU_OPERATIONS.')
MACROS += [('HOROVOD_CPU_OPERATIONS_DEFAULT', "'C'")]
elif cpu_operation.upper() == 'GLOO':
if compile_without_gloo:
raise ValueError('Cannot set both HOROVOD_WITHOUT_GLOO and HOROVOD_CPU_OPERATIONS=GLOO.')
if is_mac:
raise RuntimeError('Cannot compile Gloo on MacOS, try changing HOROVOD_CPU_OPERATIONS.')
elif not have_cmake:
raise RuntimeError('Cannot compile Gloo without CMake, try installing CMake first.')
MACROS += [('HOROVOD_CPU_OPERATIONS_DEFAULT', "'G'")]
if have_mpi:
MACROS += [('HAVE_MPI', '1')]
SOURCES += ['horovod/common/half.cc',
'horovod/common/mpi/mpi_context.cc',
'horovod/common/mpi/mpi_controller.cc',
'horovod/common/ops/mpi_operations.cc',
'horovod/common/ops/adasum/adasum_mpi.cc',
'horovod/common/ops/adasum_mpi_operations.cc']
COMPILE_FLAGS += shlex.split(mpi_flags)
LINK_FLAGS += shlex.split(mpi_flags)
if have_gloo:
MACROS += [('HAVE_GLOO', '1')]
INCLUDES += ['third_party/gloo']
SOURCES += ['horovod/common/gloo/gloo_context.cc',
'horovod/common/gloo/gloo_controller.cc',
'horovod/common/gloo/http_store.cc',
'horovod/common/gloo/memory_store.cc',
'horovod/common/ops/gloo_operations.cc']
if have_ccl:
MACROS += [('HAVE_CCL', '1')]
INCLUDES += [ccl_root + '/include/']
SOURCES += ['horovod/common/ops/ccl_operations.cc']
LIBRARY_DIRS += [ccl_root + '/lib/']
LINK_FLAGS += ['-lccl']
if have_cuda:
set_cuda_options(build_ext, COMPILE_FLAGS, MACROS, INCLUDES, SOURCES, have_mpi, LIBRARY_DIRS, LIBRARIES)
INCLUDES += ['horovod/common/ops/cuda']
if have_rocm:
MACROS += [('HAVE_ROCM', '1'), ('HAVE_GPU', '1')] + gpu_macros
INCLUDES += gpu_include_dirs
SOURCES += ['horovod/common/ops/hip_operations.cc',
'horovod/common/ops/gpu_operations.cc']
if have_mpi:
SOURCES += ['horovod/common/ops/mpi_gpu_operations.cc']
LIBRARY_DIRS += gpu_lib_dirs
LIBRARIES += ['hip_hcc']
if have_nccl:
MACROS += [('HAVE_NCCL', '1')]
INCLUDES += nccl_include_dirs
SOURCES += ['horovod/common/ops/nccl_operations.cc']
if have_mpi:
SOURCES += ['horovod/common/ops/adasum_gpu_operations.cc']
LIBRARY_DIRS += nccl_lib_dirs
LIBRARIES += nccl_libs
if have_ddl and have_mpi:
MACROS += [('HAVE_DDL', '1')]
INCLUDES += ddl_include_dirs
SOURCES += ['horovod/common/mpi/ddl_mpi_context_manager.cc',
'horovod/common/ops/ddl_operations.cc']
LIBRARY_DIRS += ddl_lib_dirs
LIBRARIES += ['ddl', 'ddl_pack']
if gpu_allreduce:
MACROS += [('HOROVOD_GPU_ALLREDUCE', "'%s'" % gpu_allreduce[0])]
if gpu_allgather:
MACROS += [('HOROVOD_GPU_ALLGATHER', "'%s'" % gpu_allgather[0])]
if gpu_broadcast:
MACROS += [('HOROVOD_GPU_BROADCAST', "'%s'" % gpu_broadcast[0])]
return dict(MACROS=MACROS,
INCLUDES=INCLUDES,
SOURCES=SOURCES,
COMPILE_FLAGS=COMPILE_FLAGS,
LINK_FLAGS=LINK_FLAGS,
LIBRARY_DIRS=LIBRARY_DIRS,
LIBRARIES=LIBRARIES,
BUILD_GLOO=have_gloo,
BUILD_MPI=have_mpi,
)
def enumerate_binaries_in_path():
for path_dir in os.getenv('PATH', '').split(':'):
if os.path.isdir(path_dir):
for bin_file in sorted(os.listdir(path_dir)):
yield path_dir, bin_file
def determine_gcc_version(compiler):
try:
compiler_macros = subprocess.check_output(
'%s -dM -E - </dev/null' % compiler,
shell=True, universal_newlines=True).split('\n')
for m in compiler_macros:
version_match = re.match('^#define __VERSION__ "(.*?)"$', m)
if version_match:
return LooseVersion(version_match.group(1))
print('INFO: Unable to determine version of the compiler %s.' % compiler)
except subprocess.CalledProcessError:
print('INFO: Unable to determine version of the compiler %s.\n%s'
'' % (compiler, traceback.format_exc()))
return None
def find_gxx_compiler_in_path():
compilers = []
for path_dir, bin_file in enumerate_binaries_in_path():
if re.match('^g\\+\\+(?:-\\d+(?:\\.\\d+)*)?$', bin_file):
# g++, or g++-7, g++-4.9, or g++-4.8.5
compiler = os.path.join(path_dir, bin_file)
compiler_version = determine_gcc_version(compiler)
if compiler_version:
compilers.append((compiler, compiler_version))
return compilers
def find_matching_gcc_compiler_path(gxx_compiler_version):
for path_dir, bin_file in enumerate_binaries_in_path():
if re.match('^gcc(?:-\\d+(?:\\.\\d+)*)?$', bin_file):
# gcc, or gcc-7, gcc-4.9, or gcc-4.8.5
compiler = os.path.join(path_dir, bin_file)
compiler_version = determine_gcc_version(compiler)
if compiler_version and compiler_version == gxx_compiler_version:
return compiler
print('INFO: Unable to find gcc compiler (version %s).' % gxx_compiler_version)
return None
def remove_offensive_gcc_compiler_options(compiler_version):
offensive_replacements = dict()
if compiler_version < LooseVersion('4.9'):
offensive_replacements = {
'-Wdate-time': '',
'-fstack-protector-strong': '-fstack-protector'
}
if offensive_replacements:
from sysconfig import get_config_var
cflags = get_config_var('CONFIGURE_CFLAGS')
cppflags = get_config_var('CONFIGURE_CPPFLAGS')
ldshared = get_config_var('LDSHARED')
for k, v in offensive_replacements.items():
if cflags:
cflags = cflags.replace(k, v)
if cppflags:
cppflags = cppflags.replace(k, v)
if ldshared:
ldshared = ldshared.replace(k, v)
return cflags, cppflags, ldshared
# Use defaults
return None, None, None
# Filter out all the compiler macros (starts with -D)
# that need to be passed to compiler
def filter_compile_macros(compile_flags):
res = []
for flag in compile_flags:
if flag.startswith('-D'):
res.append(flag)
return res
def build_tf_extension(build_ext, global_options):
# Backup the options, preventing other plugins access libs that
# compiled with compiler of this plugin
options = deepcopy(global_options)
check_tf_version()
tf_compile_flags, tf_link_flags = get_tf_flags(
build_ext, options['COMPILE_FLAGS'])
gloo_compile_macros = filter_compile_macros(tf_compile_flags)
tensorflow_mpi_lib.define_macros = options['MACROS']
tensorflow_mpi_lib.include_dirs = options['INCLUDES']
tensorflow_mpi_lib.sources = options['SOURCES'] + \
['horovod/tensorflow/mpi_ops.cc']
tensorflow_mpi_lib.extra_compile_args = options['COMPILE_FLAGS'] + \
tf_compile_flags
tensorflow_mpi_lib.extra_link_args = options['LINK_FLAGS'] + tf_link_flags
tensorflow_mpi_lib.library_dirs = options['LIBRARY_DIRS']
tensorflow_mpi_lib.libraries = options['LIBRARIES']
cc_compiler = cxx_compiler = cflags = cppflags = ldshared = None
if sys.platform.startswith('linux') and not os.getenv('CC') and not os.getenv('CXX'):
# Determine g++ version compatible with this TensorFlow installation
import tensorflow as tf
if hasattr(tf, 'version'):
# Since TensorFlow 1.13.0
tf_compiler_version = LooseVersion(tf.version.COMPILER_VERSION)
else:
tf_compiler_version = LooseVersion(tf.COMPILER_VERSION)
if tf_compiler_version.version[0] == 4:
# g++ 4.x is ABI-incompatible with g++ 5.x+ due to std::function change
# See: https://github.com/tensorflow/tensorflow/issues/27067
maximum_compiler_version = LooseVersion('5')
else:
maximum_compiler_version = LooseVersion('999')
# Find the compatible compiler of the highest version
compiler_version = LooseVersion('0')
for candidate_cxx_compiler, candidate_compiler_version in find_gxx_compiler_in_path():
if candidate_compiler_version >= tf_compiler_version and \
candidate_compiler_version < maximum_compiler_version:
candidate_cc_compiler = \
find_matching_gcc_compiler_path(candidate_compiler_version)
if candidate_cc_compiler and candidate_compiler_version > compiler_version:
cc_compiler = candidate_cc_compiler
cxx_compiler = candidate_cxx_compiler
compiler_version = candidate_compiler_version
else:
print('INFO: Compiler %s (version %s) is not usable for this TensorFlow '
'installation. Require g++ (version >=%s, <%s).' %
(candidate_cxx_compiler, candidate_compiler_version,
tf_compiler_version, maximum_compiler_version))
if cc_compiler:
print('INFO: Compilers %s and %s (version %s) selected for TensorFlow plugin build.'
'' % (cc_compiler, cxx_compiler, compiler_version))
else:
raise DistutilsPlatformError(
'Could not find compiler compatible with this TensorFlow installation.\n'
'Please check the Horovod website for recommended compiler versions.\n'
'To force a specific compiler version, set CC and CXX environment variables.')
cflags, cppflags, ldshared = remove_offensive_gcc_compiler_options(compiler_version)